Bicycle-brake.



No: 636,494. Patented Nov. 7, |899.

G. M. COLLINS.

BICYCLE BRAKE.

{Application tiled June 22, 1899.1

(No Model.)

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i UNITED STATES PATENT OEEICE.

GEORGE M. OOLLINS, OF DAVENPORT, WASHINGTON, ASSIGNOR OE ONE- HALE TOJOHN E. KEENER, OE SAME PLACE.

A BICYCLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 636,494, dated November7', 1899.

Application filed 1T une 22 1899. Serial No. 721,479. (No model.)

T0 all whom, it may con/cern:

Beit known that I, GEORGE M. COLLINS, a

citizen of the United States, residing at Dav-v general, and moreparticularly to that class known as rollerbrakes; and it has 'for itsobject to provide a brake of this nature which will be simple in itsconstruction and which may be readily applied to and detached from abicycle-frame and in which, moreover, the supporting-frame will beformed of a single wire or band, with a consequent cheapness andsimplicity.

In the drawings forming a portion of this specification, and in whichlike numerals of reference designate corresponding parts in the severalviews, Figure 1 is a perspective view of a portion of a bicycle, showingmy brake applied thereto. Fig. 2 is a vertical section of the brake withthe friction-roller shown in elevation. Fig. 3 is a section of thefriction-roller, taken through its axis.

Referring now to the drawings, in constructing a brake in accordancewith this invention a supporting-frame is formed of a wire band, whichis bent midway of its ends to form a loop 5,*the central portion ofwhich at the rear is bent downwardly and upwardly, as shown at 6, toform a second loop at right angles to the loop 5, through which ispassed a set-screw 7 for the attachment of the frame or bracket to thestem of the forkcrown of a bicycle. From the ends of the loop 5 thematerial of the frame is bent outwardly and then forwardly to lieparallel, as shown at 8, and is then bent to form two coaxial loops 9and 10, from each of which the material is then continuedlupwardl'y atright angles to the extensions 8 for a distance somewhat greater thanthe length of the radius of the friction-roller to be supported thereby,from which upwardly-extending portions 11 the material is bentbackwardly to lie parallel with the portions 8 and to projectover them,as shown at 13, the ends being then brought inwardly and then turnedupwardly at right angles to enter a coupling-collar 14.

The axis of the loops 9 and 10 is at right angles to the planescontaining the extensions 8 and 11, and passed through these loops is anaxle 15, upon which is arranged a roller 16, having a frusto-conicaldepression in each of its faces adapted to cooperate with cones 17 toform cone-bearings. The cones 17 are threaded upon the axle 15 foradjustment longitudinally thereof to compensate for wear of `the bearingand are held xedly through the medium of clamping-nuts 18 upon the endsof the 'axle 15 and which nuts impinge the loops 9 and 10 and clamp themupon the bases of the cones. `The supporting frame or bracket describedis of spring material, which permits this operation.

The roller 16 has a peripheral groove'19, which is angular incross-section and in which is seated a similar Iiange 2O upon the innersurface of a rubber tire 2l, arranged upon the wheel, although this tiremay be of any other desired material.

Connecting the extensions 13 of the supporting frame or bracket is aplate 22, having its end curved upwardly and inwardly to formcylindrical eyes 23, which inclose the extensions 13, the plate 22 lyingupon the lower side of said extensions and being separated from theroller 16 by a slight interspace.

In practice the loop 5 is slipped over the stem of the fork-crown of abicycle, and aclip 25, consisting of a straight wire having its endsbent to lie parallel with the body thereof, has its ends engaged withthe material of the frame at the extremities of the loop 5, thuspreventing spreading of the loop, the shoulders formed by the outwardturning of the material at this point preventing the clip slidingforwardly of the frame. When the frame is in this position, theclamp-screw 7 is operated to engage the stem of the forkcrown and holdthe same fixedly in place. The position of the roller-supporting frameis such that the roller will project outwardly and over the front wheelof the bicycle andwill be but slightly separated therefrom. The usualbrake-operating rod 26 is then disposed in the coupling 14, when it willbe seen that by pressing said rod downwardly the elasticity of the frameof the device Will permit the plate 22 to engage the surface of theroller after the roller has engaged the tire of the bicycle-wheel. Thelirst pressure of the rod 26 bends the extensions 11 slightly, but bendsthe extensions S to a greater extent and presses the roller 16 intoengagement with the bicycle-wheel. Continued pressure engages the plate22 with the roller. The plate will thus retard therotation of the roller16, which will revolve with the wheel of the bicycle and will henceretard the rotation of the latter. The slip in the device, due to thenature of the engaging surfaces, will be substantially all between theroller 1G and the wheel of the bicycle.

It will be seen that the construction is very cheap in its manufacture,while at the same time it is simple and eitective, is not susceptible todisorder, and does not wear the tire of bicycle appreciably.

Having thus described the invention, what is claimed is l. Abicycle-brake, comprising an elastic frame including a loop adapted toreceive the stem of a forlcrown, arms extending from the ends of theloop and having additional coaxial loops therein, said frame beingcontinued upwardly from the second loops and then rearwardly and theninwardly and upwardly to receive an operating-rod, an axle in the secondloops, a rotatable body mounted on said axle,and a plate fixed to saidrearwardlyextending portion of the frame and adapted to engage anddepress the rotatable body.

2. A bicycle-brake, comprising a Wire, the central portion of which isbent to form a loop and having a downwardly-extending portion providedwith a threaded eye adapted to receive a clamping-screw, the ends ofsaid loop being bent outwardly and then parallel and having additionaland coaxial loops at the ends of said parallel portions, the ends of thewire being then bent upwardly and rearwardly and then inwardly, andhaving their terminals extending upwardly and in mutual contact, anoperating-rod connected with said terminals, an axle arranged in thecoaxial loops, a rotatable body mounted upon the axle, a plate fixed tothe rearwardly-extending portions of the wire, and a link inclosing thewire at the ends of the first-named loop.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

GEORGE M. COLLINS.

Witnesses:

J. E. FRASER, E. N. INNEs.

